Cheap Frontier Airlines flights Newark Liberty Intl. Airport (EWR) to San Jose (SJC)

Scoring cheap one-way Frontier Airlines flights from EWR to SJC on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for return or one-way flights to San Jose in April or November. You could find an affordable fare with Frontier Airlines during these quieter months.

For cheap Frontier Airlines fares from Liberty Intl. Airport (EWR) to Norman Y. Mineta San Jose Intl. Airport (SJC), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact what you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct trip from EWR to SJC with Frontier Airlines or any other carriers, use our “Nonstop” filter when searching for tickets.

To find the earliest departures from EWR to SJC with Frontier Airlines, sort your results by “Morning” and “Early Morning.” Choosing an early flight usually means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Norman Y. Mineta San Jose Intl. Airport (SJC) is the primary San Jose gateway for Frontier Airlines flights from Liberty Intl. Airport (EWR).

Travel from EWR to SJC with Frontier Airlines and you can look forward to a host of benefits including a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you can also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee generally applies if you modify or cancel your flight more than 24 hours after it’s confirmed. To find plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you look for flights. For more information on canceling or modifying your reservation, visit “Trips,” select your flight and click on “Manage Booking.”